CONTENTS. 
LPS Eee See Ue Sel epee akg MEAN Bae A Bcc s 
discon arsenious acid im tree state... 12.2. - lene a seccs cus states aoe EB 
aM Led MeNimn SUD MAte a. ot a. Wed o 6 aia sone a Seas von. savin cueeeee : 
Iter Comins aerate oe forse a a oy s aeion SR. a em ee eee Z 
SOUS TVETEEG JS\TS SC) 0 (0 a aS a eso a ae Segui ad 
Ree REINO AMIRA <7 athe Yo Fat ecta Aes at Ge eR. To el ee 
~"}L Sun CRT EPH 0) 2 AA oe oe ee oe ee er ee eee, amen Ee eee 
Ley SREY alle Se Ee ee ee ae ne a ene CL eR ae 
POSTINGS SCM AS RCI ESE OE er SPO Re ee ee er ees 
PE LL ae Be 52 RR 2 eS eng ee en ae 
eter cane eA SB Fee eA SS ihe Sk x oes ae oh Sean cee 
TUE ID ORE OM 6 2 SE se ea ee ee cee To eS 
colitis, GMS O67 Ces See ee i ie re. ain ores Ss 
CE UU REFIT CNIS UTES, el oO ee ee Se, AE RIP! 2 
rear Bear ages Sere ats Qo ee oe WS Ac ans Oe Se eck oe ee 
Sette ame meres tet SA Pe ee ee 8 oi OS 8 SY a Bee eta ane 
Desirability of ascertaining composition and value of compounds before 
bela. oan cee roc n ah abw tcc ew atents 2 2a RES, o> ee ee oe 
Page. 
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